Finding the Third Proportional to 535,311 and 807,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   535,311 : 807,502.50 = 807,502.50 : x
2. Step 2: Convert to fraction form
   535,311/807,502.50 = 807,502.50/x
3. Step 3: Cross multiply
   535,311x = 807,502.50 × 807,502.50
4. Step 4: Simplify right side
   535,311x = 652,060,287,506.25
5. Step 5: Solve for x
   x = 652,060,287,506.25/535,311
6. Step 6: Final answer
   x = 1,218,096.19